MailSandbox is a fast, zero-dependency email testing tool & API with a web UI, SMTP server, Postmark API emulation, and MCP server for AI-assisted debugging.
Latest release v1.28.1-mailsandbox — v1.28.1-mailsandbox: Fixed SMTP handler compilation · 11 Sept 2025
1 file for Claude Code: mailsandbox CLAUDE.md — 1,392 tokens loaded in every session.
CLAUDE.md A 1,392 tok These files are btafoya/mailsandbox's own configuration — they tell Claude Code how to work on this repository, so they are not mods to install elsewhere. Copy one as a starting point and replace the parts that are about this project.